Sash-balance.



No. 791,489. PATENTED JUNE 6, 1905.

- 0. H. OGUMPAUGH.

SASHBALANCE. "APPLICATION PILED MAB..1 6, 1904.

2 SHBETS-SHEET 1.

' Witneoam No; 791,489. PATENTED JUNE 6, 1905. I I i 0.. H. OUUMPAUGH.

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Patented June 6, 1905.

PATENT OFFICE.

CHARLES H. OCUMPAUGH, ROCHESTER, NEW YORK.

SASH-BALANCE.

SPECIFICATION forming part of Letters Patent No. 791,489, dated June 6,1905.

Application filed March 15, 1904- Serial No. 198,197.

, a resident of Rochester, in the county of Monroe and State of NewYork, have invented certain new and useful Improvements in Sash-Bahances; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it pertains to make and use the same.

- The invention relatesto spring sash-balances, which heretofore havebeen limited in respect to the run of the cord or tape, for the reasonthat a single springhas been employed and that such spring necessary fora longer run would require a mortise of objectionable depth. The objectsof the present invention are to overcome this difficulty and to effectit by means permitting the use of springs now in use of standard sizeand to do it in a manner that will increase the run of each cord or tapeand to secure other advantages.

In the accompanying drawings, Figure l is a perspective of the deviceapplied to a window. Fig. 2 is a front view of a spring-winding cup.Fig. 3 is a vertical central section of the device inclosed in theframe. Fig. 4: is a section on line 4 {I of Fig. 3. Fig. 5 is a sectionon line 5 5 of Fig.- 3. Fig. 6 is an elevation of a rotatable sleeveabout which the springs are coiled in practice. Fig. 7 is a perspectiveof the cup. Fig. 8 is a perspective of the hood that incloses the cup. IFig. 9 is a view of a modification. Fig. 10 is a view of a modifieddetail.

Numeral 1 denotes a sash-balance frame having an opening 2 for a cord,tape, or equivalent and having two openings 3 for a shaft or pin 3 tosupport a hood 4, cup 5, and sleeve 6, the latter being supportedmediately by hollow trunnions 16. The cup or winding device isjournaledor rotatably supported on shaft 3 near the adjacent wall of the hood andnear one end of the sleeve or spring axis.

The sleeve 6 comprises two parts, each having a slot 7 to provide forconnecting the end of a spring thereto and having between them a web orpartition 8 to separate springs supported on the two parts of thesleeve, said parts together constituting an axis common to the springs.This axis may at each end receive loosely a hollow trunnion 16, one onthe hood and the other on the cup.

The spring 4 containing andcord-winding cup 5 has a post 10 for theattachment of a cord or the like, which extends through the slot 11 andis wound on the cup and connected to a sash in usual manner. This cuphas two chambers of unequal diameter separated by a step 12. The innerchamber, of least diameter, contains a spring connected at 10 (see Fig.7) to the cup and at 7 (see Fig. 6) to the sleeve or spring axis. Theouter chamber contains a spring and preferably also the web or partition8. The hood also has, in effect, two chambers, one situated within theposts 17, which constitutes a mutilated ring or step. These posts aremainly useful in assembling the parts, but are not essential in allcases, and neither is the step 12. The hood itself being in the natureof a support or secondary frame need not in all cases be distinct fromthe main frame. The'first chamber, situated within said posts, holds asingle spring and the other, situated exteriorly of the first,

contains the winding device and a spring within said device. The springsbeing connected, as shown, to the cup, hood, andthimble, act oppositelyon the latter when the cord is wound on the cup, whereby one spring isauxiliary or supplemental to the other and without'necessitating anincrease of the diameter of the spring-containing devices. I

The cup 5 is a winding device, the cord being wound on its exterior.Assuming that a cord is wound on the cup and that the springs are notunder tension, a pull on the cord will rotate the cupconnecting the cordand through the medium of the outer spring rotating the sleeve alittlemore slowly, thereby contracting the inner spring until such timeas it is put under tension, whereupon it holds the sleeve, and the pullof the cord continuing the outer spring is put under tension. In somecases a removable pin or screw 18 is inserted at 19 in the hood near atrunnion 16, as indicated in Fig. 8, to engage a slot 7 in the sleeve toprevent the rotation; in which case the inner springthatis, the one nextthe bottom of the eupif supplied will be inoperative. In practice saidinner spring can be thus made idle, if desired, or'it may be omitted insome cases and subsequently supplied, if found desirable, the screw-stopbeing used or not, according as it is desired to use one or moresprings.

A plurality of hoods and cups may be combined, as indicated in Fig. 9,in which two tapes are shown connected at 20, the use of such connectionnot being essential, however, in all cases. A tandem arrangementsubstantially as set forth in my Patent No. 596,216, of December 28,1897, would not depart from the present invention. It is not essentialin all cases that the sleeve and shaft 3 be made separate pieces. It isalso obvious that the Web 8 is not indispensable and that the sleevemight be made with a thicker wall and having a single slot,substantially as indicated in Fig. 10, and such variations and others ofa similar and obvious character are contemplated by the presentinvention.

Having thus described my invention, what Iclaim as new, and desire tosecure by Letters Patent, is-

1. In a spring sash-balance, a hood and two rotatable spring-windingparts, a spring connected at one end to one of the parts and at theother end to the other part and removable means for holding the saidlatter part from rotation, whereby a single spring may be used or moreif a longer run is desired.

2. In a spring sash-balance, a hood, a cordwinding device, a rotarysleeve, a shaft supporting the winding device and the sleeve, and meansfor holding the sleeve against rotation if desired.

3. In a spring sash-balance, a winding device having a cord thereon anda stepped cover or hood having interior parts of different diameters,one containing a spring only, and the other containing a spring, awinding device and a cord. 9

4. In a spring sash-balance, two springs, an

axle adapted to receive an end of each of the two springs and having anextension forming a partition for separating the two springs.

5. In a spring sash-balance, an axle having a solid periphery at or nearits longitudinal center and having a spring-receiving slot over eachside of the center, the said two slots extending in a generallongitudinal direction.

6. In a spring sash-balance, a winding de vice, a hood, and two springs,one only of the springs being connected to the winding device and theother to the hood, and a movable connection, the inner ends of saidsprings being attached to said connection.

7. In aspring sash-balance, a hood, a winding device, attached to thehood and two springs, one spring only being attached to the windingdevice, and the two springs and the winding device having a common axis,said axis being rotatable and each spring attached to it.

8. In a spring sash-balance, a hood, two springs, a tape-winding deviceinclosing one of the springs, one spring being connected with thewinding device and the other with the hood,and a connection between twosprings permitting them to be wound as one continous spring.

9. In a spring sash-balance, a hood, a coiled spring, a cord-windingdevice, and means for extending said spring consisting of a secondspring-coil, and a rotatable part, the inner end of each spring beingfixed to said rotatable part. i

10. In a spring sash-balance, a hood and a cord-winding device adaptedto receive two springs having a common axis, one of the springs arrangedas a right-hand and the other as a left-hand spring, an end of one ofthe springs being connected to the winding device, and an end of theother connected to the hood, and a movable device connecting theadjacent ends of the two springs.

11. In a spring sash-balance, a hood, a cord, a cord-winding device, arotary sleeve, a shaft supporting the winding device and sleeve, andmeans for connecting a second spring to said sleeve and winding devicesto prolong the run of the cord.

12. In aspring sash-balance, aframe,a cordwinding device, two springsconnected to a rotary part, and an axle within said rotary part, thesaid winding device being supported on the axle at one end of the saidpart.

13. In a spring sash-balance, a frame, a cup constituting a cord-windingdevice, and having chambers to hold two springs in parallel planes, aright-hand spring, a left-hand spring, a rotatable axis common to thesprings, and a cord, the balance being operative with one spring only orwith two as desired.

14. In a sash-balance, the combination with a cord-winding device of twocoiled springs acting conjointly upon it to prolong the run of a cord inthe same direction, one only of the springs being connected with thepulley, and an axis for the springs both springs being connected to saidaxis.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

CHARLES H. OCUMPAUGI'I.

Witnesses:

A. M. ZIMMER, A. GREENWOOD.

